Garnet for water filtration in multi media filters

Garnet is high density granular filter media for water filtration in multi - media filters. Multi media filters use three or more media usually sand, anthracite coal and garnet.

How does a multi-media filter work?

Mixed-media filters have a coarse-to-fine gradation of filter media. By using fine media with a high specific gravity, the layers of media approximately maintain their respective position in the filter bed even after backwashing. Some mixing does occur. Mixing actually makes the filters more effective by providing more contact area for the suspended particles.

In operation, the coarse layer of garnet on top removes the larger suspended particles. The finer particles pass through this layer and are removed by finer media below.

This design causes that the whole filter bed is utilized to the maximum to remove suspended particles. This results in longer filter runs and higher filtration rates because head loss does not build up as quickly.

Multi-media filters are becoming popular because they can greatly increase a treatment plant’s capacity without loss water quality.

 Why Garnet?

Using a High Density Garnet  for water filtration in multi - media filters solves a major filtration problem. A properly designed multi-media filter system contains filter media of large grains on top and small grains on the bottom of the filter and provides superior performance even after many backwashings. The solid substances getting into the entire filter bed result in increased solids storage, longer filter runs and higher filtration rates.

This stable condition of large grains above finer one is achieved by the use of filter material of different size and specific gravities.

What size garnet do I need for WATERFILTRATION in Multi-Media Filters ?

High Density Garnet  for water filtration in multi - media filters with an effective size of 1.4-1.7mm is placed on top of the gravel. Another layer of Garnet, effective size 0.3-0.4mm, is placed on top of the coarse garnet and will filter down to the 10 micron range. Filter Sand, (effective size of 0.5mm) and Anthracite (effective size 0.9mm), can form larger, less dense layers.

Multi-Media Filtration Technology is applicable to both water and waste water treatment. Custom designed filters with varying filter bed configurations can be designed to meet specific needs. For the majority of municipal and industrial water supply applications, a filter bed composed of 55% low density material, 30% medium density material and 15% high density, such as Garnet is Recommended.

                                                                       Example of Multi-Media Filter Bed

Advantages:

-High specific gravity provides unique filter design

-Garnet, in combination with other filter media, provides higher flow rates, higher loading and better filtration

-The high hardness of GARNET reduce attrition and extends the life time of the filter bed and provides for years of reliable service

-GARNET is an excellent support bed for other high density medias

-RZG Garnet filtration products are UL approved and certified in accordance with NSF/ANSI Standard 61, Drink Water Systems Components

RZG garnet for water filtration in multi - media filters is available in 25kg (55lbs) poly bags shrink wrapped onto a 1000kgs (2200lbs) or 2000kgs (4400lbs) pallet. Alternatively,
 RZG garnet for water filtration in multi - media filters is available loose inside either a 1000kgs (2200lbs) or 2000 kgs (4400lbs) bulk bag with inside plastic liner on a pallet.

All Qingdao Seaport, Rizhao Seaport and Lianyungang port located within 100 miles (160km) away from RZG's location. This make big saving from the inland transportation charges for customers.

About RZG

Rizhao Garnet Ltd (RZG) as the name implies, is a new rising global leading manufacturer and supplier of Industrial garnet abrasive beginning in 2009. A major strength of the company is the huge size of its garnet deposits and therefore, its ability to supply the market with a safe, reliable, consistent for a long time. RZG has discovered and acquired three exceptionally large (over 250 million tons totally counting over 85% of total China discovered garnet reserve) garnet deposits grading over 80%.

All these three properties were intensively explored for Rutile in the 1980s by several major exploration companies. The high grade garnet content was discovered at the time.

These three most favorable eclogite deposits are the Rizhao Mine, Weifang mine in Shandong Province and Lianyungang Mine in Jiangsu province, which are all in Sulu UHP Metamorphic belt, one of the 28 UHP Metamorphic belts largest in size and best protected. In addition to garnet, also contains some million tons of Rutile. The presence of rutile will significantly reduce the cost of the garnet product to a level which competitive with common abrasive for sandblasting application, like coal slag, copper slag, nickel slag, glass beads, silica and etc.

The garnet for water filtration in multi - media filter in all our three deposits are all rock almandine (almandite) variety with a hardness of 7.5 and S.G 4.0. It crushed into sharp angled, chunky fragments ideally suited for aggressive blasting.

The establishment of our first dry processing plant in Rizhao in 2009 was a significant milestone in establishing the production of RZG Rock Garnet as high quality abrasive with high mineral purity and proper quality control. Around 30 employees are working in our production plant on more than 59000 square meters.

The plant has undergone various technical and equipment upgrades to keep up with the increasing demand for RZG Rock Garnet with substantial investments were made.

Available RZG garnet for water filtration in multi - media filters is in various sizes from coarse, medium to fine mesh and ready to serve all of your applications.